bug fix

src/main.cpp

@@ -109,10 +109,14 @@ int main ( int argc, char** argv )
 			pApp = &app; /* Needed for post-event routine */
 
 			/* Show dialog */
-			ServerDlg.show ();
-		}
-
-		app.exec ();
+			ServerDlg.show ();
+			app.exec ();
+		}
+		else
+		{
+			// only start application without using the GUI
+			app.exec ();
+		}
 	}
 
 	return 0;